Rule 34 Dev - 2014 alicorn anal anal_insertion anal_masturbation anal_sex anus ass balls big_anus big_butthole book bound bowling_ball chains claws cutie_mark deep_throat deepthroat dildo dragon duo equine fellatio female feral forced friendship_is_magic fur furry furry_only hair hi_res horn improvised_dildo insertion inside library long_hair male mammal masturbation my_little_pony neck_bulge oral penetration penis pillow princess_celestia_(mlp) purevil pussy semi_incest sex sex_toy size_difference spike_(mlp) straight stretched_anus tears throat_bulge toe_claws vein white_fur wings|1876984832